Licensed Insulation & Acoustical (C-2) contractors in Diamond Bar, CA

The California Contractors State License Board (CSLB) lists 3 Insulation & Acoustical (C-2) contractors in Diamond Bar, California. Each links to a full dossier with license status, insurance, bond, and enforcement — as of August 11, 2026.

3 contractors

1. All About T-bar

   Diamond Bar, CA · CSLB #570421 · as of August 11, 2026
   Active · clear
2. Hammond Drywall Construction

   Diamond Bar, CA · CSLB #956694 · as of August 11, 2026
   Active · clear
3. Light Contracting

   Diamond Bar, CA · CSLB #1122793 · as of August 11, 2026
   Active · clear

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Data sourced from the California Contractors State License Board (CSLB), current as of August 11, 2026. IsItLicensed is not affiliated with or endorsed by the CSLB or the State of California. Always verify against the official record.